Display screen with a graphical user interface



FIG. 1 depicts a front view of a display screen with a graphical user interface showing a first embodiment of an instrument status bar of the design.

FIG. 2 depicts a front view of a display screen with a graphical user interface showing a second embodiment of an instrument status bar of the design; and,

FIG. 3 depicts a front view of a display screen with a graphical user interface showing a third embodiment of an instrument status bar of the design.

The broken lines shown in the Drawings represent portions of the display screen and/or graphical user interface that form no part of the claimed design. 

CLAIM We claim the ornamental design for a display screen with a graphical user interface, as shown and described. 